Our large Kundt's Tube designed by Prof. Rudnick dramatically demonstrates standing acoustical waves. The speed of sound can also be measured. See Kundt's Tube (Acoustics) [1].
Further demonstrations that can be done with the Kundt's tube are described here [1] in the Acoustics section of the demo manual. |
Links:
[1] https://demoweb.physics.ucla.edu/node/63